18
MAINTENANCE
Cleaning the extract air fan
To clean the extract air fan, proceed as follows:
1. Disconnect the ventilation unit from the mains electricity supply.
2. Lift the latch to open the door of the Vallox ventilation unit.
3. Lift the door off.
CAUTION
The door is heavy.
4. Remove the filters (C), the cell top support (E) and the heat recovery cell
(D). See chapters “Replacing the filters” and “Cleaning the heat recovery
cell”.
5. Open the four screws (figure 1) on the extract air fan cover and remove
the cover (figure 2). The fan can now be cleaned in place.
6. To remove the fan for cleaning:
a. Push the fan gently upward (figure 3).
b. Pry the plastic lock to the right of the fan with a screwdriver, for
example (figure 4).
c. The fan falls downwards (figure 5).
d. Pull the fan out of the unit.
e. Disconnect the fan wire quick connector (figure 6).
7. Clean the fan.
8. To reassemble the ventilation unit, follow the above steps in reverse
order.
9. Close the door and plug the unit back into the mains.
The extract air fan has now been checked and cleaned.
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